Ch. 10 Lecture Notes Flashcards
Effective Dose Limiting System, a set of numeric dose limits that are based on calculations of various risks of….
cancer and genetic effects to tissues or organs exposed to radiation.
Effective Dose limiting system includes all radiation-vulnerable human organs that can contribute to _____ ____ rather than only those human organs considered critical.
potential risk
Different tissues/organs have different radio-sensitivities. “_____ ____ _____” is the ratio of a tissue/organ to total risk when the whole body is irradiated.
Tissue weighting factor (Wt)
True or false: Upper boundary radiation exposure limits for occupationally exposed persons are associated with risks that are similar to those in other safe industries.
True
Effective Dose (EfD) = _____ x _____ x______
Absorbed dose (D) x Wr (radiation risk) x Wt (Tissue sensitivity)
Responsibilities of Radiation Safety Officers (RSO):
- Develop radiation safety programs
- Implement these programs
- Monitor the programs
ALARA Program recommends ___% of MPD (Maximal Permissible Dose) for occupational workers (____mrem per year)
10% 500 mrem (50mSv)
Reject Analysis Program:
Allowance of 5-9% repeats.
Helps minimize patient dose.
FDA:
Regulates the design and manufacture of products used in the radiation industry.
EPA:
Monitors the environment (Radon gas)
OSHA:
Regulates occupational exposure in the workplace (“Right to know” for employees)
NRC:
Oversees ONLY the nuclear industries (not x-ray).
HHS:
(Health and Human Services)
Educational programs for occupational radiation workers.
JCAHO:
Subcontracted by Medicare to regulate health maintenance organizations for Medicare reimbursements.
ACR:
The only agency that oversees and regulates mammography.
